Bagasse-furnace



2 sheets-sheen 2.

Patented May 3, 1887*.

. BAGASSE PURNACE.

INVENUR WTTNEEEES 275196229710 Yaoi B14 f UNITED STATES PATENT OFFICE.

FREDERIC COOK, OF NEW ORLEANS, LOUISIANA.

BAGASSE-FURNACE.

SPECIFICATION forming part of Letters Patent No. 362,362, dated May1887.

Application filed May 29, 1886. Serial No. 203,643. (No model.)

To all whom it may concern:

Beit known that-I, FREDERIC COOK, a citizen of the United States,residing at New Orleans, in the parish of Orleans and Stat-e of ments insteam-furnaces for burning green bagasse as fuel for generating steam insteamboilers, to an improved construction of the bagasse-furnace, to thecombination therewith of steam-boilers having an air-blast and a verylarge heating-surface with a short run of the gases of combustion and avery high temperature ofthe furnace, resulting from heating the blast ofair by means of the waste heat from the boiler, by which a hot blast -isobtained upon the bagasse in the furnace, a more perfect and quickercombustion is had, the furnace is not continually chilled fromlintroduction of cold air, and more steam is generated in the boilerfrom the same amount of moist fuel than when cold air is used. I obtainthese objects by the arrangement of Amechanism shown in the accompanyingdrawings, in which-- Figure l is a vertical longitudinal section throughline A B of Fig. 3. Fig. 2 is a trans` verse vertical section throughline C D of Fig. 3. Fig. 3 is a horizontal section through Fig.1.

The bagasse direct from the mill is conveyed by a carrier, usuallydischarging into a hopper having any suitable feeding arrangement (notshown) over hole K, Figs. 1 and 2, through which it falls into thebagasse-furnace L, which is contracted at its lower portion, where theside walls are provided with tuyere-holes M, for admission of the hotblast. 'Ihese tuyereholes M connect with the hot-air passages N, andthence by hot-air ilue O to the air-heating pipes I), set in the chamberQ, which receives the waste heat from a steam-boiler, Q, and on top ofwhich chamber Q the smoke-stack R rests.

The cold air is forced, by means of a blower, S, into and through thepipes I?, thence passing as a hot blast to the bagasse-furnace L, itscourse being through the hot-air pipe T and air-passages O to thetuyeres M and furnace L. The gases of combustion pass from the,transverse to and around the tubes, thus being rapidly absorbed intothe water` and taken up in a short run without exposing largeheat-absorbing surfaces of brick-work, as is the case in old-styleboilers having long runs for the gases and having comparatively smallwaterheating but large brick heating surfaces; hence but poor result-sin evaporation have hitherto been obtained from green bagasse as v fuelwhen used in the furnaces of cylinder and flue boilers and with coldair.

Having thus described my invention, what I claim is- 1. In an apparatusfor drying and igniting damp bagasse for fuel for the production of heatand steam, the combination of a bagassefurnace having a narrowed baseand provided with side tuyeres, a chamber for thoroughly mixing andcombining the gases, tlues connecting the furnace and said chamber, asteamboiler to which the heat passes from said mixingchamber, a seriesof pipes arranged Within a space'which is adapted to carry oft' thewaste gases and products of combustion, a flue connecting said pipeswith the bagasse-furnace, and an air-impellng device for forcing heatedair to the furnace containing the damp bagasse for the purpose ofrapidly drying the same and producing'a rapid combustion, substantiallyas described.

2. In an apparatus for burning green bagasse and utilizing the heattherefrom, the combination, with a water-tube boiler, of an ovenshapedfurnace having a narrowed base and provided with side tuyeres, and acombustionchamber between the furnace and the boiler, said chamberhaving apertures formed in the walls thereof at an angle for theadmission of jets of heated air, whereby a rotary motion of IOO thegases within said chamber is produced to having apertures in the wallsthereof` for adeause a more perfect mingling thereof and to mittingheated air to mingle with the gases complete the combustion beforecoming in from the bagasse to complete the combustion contact with thecooling-surface ofthe boiler, before coming in contact with thecoolingsur 15 5 substantially as described. face of the boiler,substantially as described. 3. In an apparatus for burning green bagasseIn testimony whereof I afix my siguuturein and utilizing the heattherefrom, the combinapresence of two witnesses.

tion, with u watertube boiler, of an oven- FREDERIC COOK. shaped furnacehaving :L narrowed buse and Vifnesses: [o provided with side tuyeres,and u combustionl). J. HEAVEY,

chamber between the furnace and tlle boiler, JAMES DAVIS.

